content: /*
   * Copyright 2011-2016 David Karnok
   *
   * Licensed under the Apache License, Version 2.0 (the "License");
   * you may not use this file except in compliance with the License.
   * You may obtain a copy of the License at
   *
   *     http://www.apache.org/licenses/LICENSE-2.0
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package ix;
  
  import java.util.Iterator;
  
  final class IxDoOn<T> extends IxSource<T, T> {
  
      final IxConsumer<? super T> onNext;
  
      final Runnable onCompleted;
  
      IxDoOn(Iterable<T> source, IxConsumer<? super T> onNext, Runnable onCompleted) {
          super(source);
          this.onNext = onNext;
          this.onCompleted = onCompleted;
      }
  
      @Override
      public Iterator<T> iterator() {
          return new DoOnIterator<T>(source.iterator(), onNext, onCompleted);
      }
  
      static final class DoOnIterator<T> extends IxSourceIterator<T, T> {
          final IxConsumer<? super T> onNext;
  
          final Runnable onCompleted;
  
          DoOnIterator(Iterator<T> it, IxConsumer<? super T> onNext, Runnable onCompleted) {
              super(it);
              this.onNext = onNext;
              this.onCompleted = onCompleted;
          }
  
          @Override
          protected boolean moveNext() {
              if (it.hasNext()) {
                  T v = it.next();
                  value = v;
                  hasValue = true;
                  onNext.accept(v);
                  return true;
              }
              onCompleted.run();
              done = true;
              return false;
          }
      }
  }
  